amphitheatric

例句：

1. 1. The novel is ambiguous in its portrayal of the main character's motivations.
   这部小说在描绘主人公的动机时显得模糊不清。
2. 2.The research on this topic is multifaceted and requires a comprehensive approach.
   关于这个话题的研究是多方面的，需要采取全面的方法。
3. 3.The complexity of the issue makes it difficult to provide a simple solution.
   这个问题的复杂性使得很难提供一个简单的解决方案。